Environment

I am running on Mac OS X, but it will likely work on Linux as well with
minor fiddling.

Features

I normally place all of my coding projects in ~/code, so this directory
can easily be accessed (and tab completed) with the c command.

c railsca<tab>

There is also an h command which behaves similar, but acts on the home path.

h doc<tab>

Tab completion is also added to rake and cap commands:

rake db:mi<tab>cap de<tab>

To speed things up, the results are cached in local .rake_tasks~ and .cap_tasks~. It is smart enough to expire the cache automatically in
most cases, but you can simply remove the files to flush the cache.

If you’re using git, you’ll notice the current branch name shows up in
the prompt while in a git repository.

If you’re using Rails, you’ll find some handy aliases (below). You can
also use show_log and hide_log in script/console to show the log inline.